<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <script>

    let x = 1;
    let y = 2;
    let z = 3;
    let a = 1;
    let b = 20;
    x += 2; // x = x + 2;
    y *= 2; // y = y * 2;
    z -= 6; // z = z - 6;
    a /= 6;
    b %= 6;
    console.log(x, y, z, a, b);

  </script>
</body>

</html>